4 #include <linux/list.h>
5 #include <linux/ktime.h>
6 #include <linux/stddef.h>
7 #include <linux/debugobjects.h>
12 struct list_head entry
;
13 unsigned long expires
;
15 void (*function
)(unsigned long);
18 struct tvec_base
*base
;
19 #ifdef CONFIG_TIMER_STATS
26 extern struct tvec_base boot_tvec_bases
;
28 #define TIMER_INITIALIZER(_function, _expires, _data) { \
29 .entry = { .prev = TIMER_ENTRY_STATIC }, \
30 .function = (_function), \
31 .expires = (_expires), \
33 .base = &boot_tvec_bases, \
36 #define DEFINE_TIMER(_name, _function, _expires, _data) \
37 struct timer_list _name = \
38 TIMER_INITIALIZER(_function, _expires, _data)
40 void init_timer(struct timer_list
*timer
);
41 void init_timer_deferrable(struct timer_list
*timer
);
43 #ifdef CONFIG_DEBUG_OBJECTS_TIMERS
44 extern void init_timer_on_stack(struct timer_list
*timer
);
45 extern void destroy_timer_on_stack(struct timer_list
*timer
);
47 static inline void destroy_timer_on_stack(struct timer_list
*timer
) { }
48 static inline void init_timer_on_stack(struct timer_list
*timer
)
54 static inline void setup_timer(struct timer_list
* timer
,
55 void (*function
)(unsigned long),
58 timer
->function
= function
;
63 static inline void setup_timer_on_stack(struct timer_list
*timer
,
64 void (*function
)(unsigned long),
67 timer
->function
= function
;
69 init_timer_on_stack(timer
);
73 * timer_pending - is a timer pending?
74 * @timer: the timer in question
76 * timer_pending will tell whether a given timer is currently pending,
77 * or not. Callers must ensure serialization wrt. other operations done
78 * to this timer, eg. interrupt contexts, or other CPUs on SMP.
80 * return value: 1 if the timer is pending, 0 if not.
82 static inline int timer_pending(const struct timer_list
* timer
)
84 return timer
->entry
.next
!= NULL
;
87 extern void add_timer_on(struct timer_list
*timer
, int cpu
);
88 extern int del_timer(struct timer_list
* timer
);
89 extern int mod_timer(struct timer_list
*timer
, unsigned long expires
);
90 extern int mod_timer_pending(struct timer_list
*timer
, unsigned long expires
);
93 * The jiffies value which is added to now, when there is no timer
96 #define NEXT_TIMER_MAX_DELTA ((1UL << 30) - 1)
99 * Return when the next timer-wheel timeout occurs (in absolute jiffies),
100 * locks the timer base:
102 extern unsigned long next_timer_interrupt(void);
104 * Return when the next timer-wheel timeout occurs (in absolute jiffies),
105 * locks the timer base and does the comparison against the given
108 extern unsigned long get_next_timer_interrupt(unsigned long now
);
111 * Timer-statistics info:
113 #ifdef CONFIG_TIMER_STATS
115 #define TIMER_STATS_FLAG_DEFERRABLE 0x1
117 extern void init_timer_stats(void);
119 extern void timer_stats_update_stats(void *timer
, pid_t pid
, void *startf
,
120 void *timerf
, char *comm
,
121 unsigned int timer_flag
);
123 extern void __timer_stats_timer_set_start_info(struct timer_list
*timer
,
126 static inline void timer_stats_timer_set_start_info(struct timer_list
*timer
)
128 __timer_stats_timer_set_start_info(timer
, __builtin_return_address(0));
131 static inline void timer_stats_timer_clear_start_info(struct timer_list
*timer
)
133 timer
->start_site
= NULL
;
136 static inline void init_timer_stats(void)
140 static inline void timer_stats_timer_set_start_info(struct timer_list
*timer
)
144 static inline void timer_stats_timer_clear_start_info(struct timer_list
*timer
)
149 extern void add_timer(struct timer_list
*timer
);
152 extern int try_to_del_timer_sync(struct timer_list
*timer
);
153 extern int del_timer_sync(struct timer_list
*timer
);
155 # define try_to_del_timer_sync(t) del_timer(t)
156 # define del_timer_sync(t) del_timer(t)
159 #define del_singleshot_timer_sync(t) del_timer_sync(t)
161 extern void init_timers(void);
162 extern void run_local_timers(void);
164 extern enum hrtimer_restart
it_real_fn(struct hrtimer
*);
166 unsigned long __round_jiffies(unsigned long j
, int cpu
);
167 unsigned long __round_jiffies_relative(unsigned long j
, int cpu
);
168 unsigned long round_jiffies(unsigned long j
);
169 unsigned long round_jiffies_relative(unsigned long j
);
171 unsigned long __round_jiffies_up(unsigned long j
, int cpu
);
172 unsigned long __round_jiffies_up_relative(unsigned long j
, int cpu
);
173 unsigned long round_jiffies_up(unsigned long j
);
174 unsigned long round_jiffies_up_relative(unsigned long j
);